An integrated treatment methodology for PCB-contaminated soil /
All samples from treated soils were non-genotoxic in both
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1995.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | All samples from treated soils were non-genotoxic in both and the indigenous treatment showing a decrease of 43% over assays, and PCB concentrations for the six congeners being bacteria (Alcaligenes eutrophus H850); and (3) chemical Based on these results, KPEG did not appreciably enhance the bioassays at all sampling times. The PCB concentrations in bioassays. Data collected in this study include solvent biological test data for the two microbial genotoxicity biphenyls was seen in the soils treated with bacteria only. Changes in toxicity over time were monitored through the use composition of specific PCB congeners (one trichlorobiphenyl, decrease in the concentrations of the two pentachlorinated degradation of PCBs under the conditions used in this study. degraded in the soil as 69% more residue was extracted from dehalogenation are needed in order to make this a feasible dehalogenation by KPEG; (2) inoculation with PCB-degrading dehalogenation with inoculation of PCB-degrading bacteria. electron capture detection following treatment. The toxicity extractable organics for untreated and treated soils, extractable organics over time, with the exogenous bacterial Further research on the optimal parameters for KPEG greenhouse (microcosm) study was conducted. Three different heptachlorobiphenyl) were monitored by gas chromatograph- induction assay. In order to examine the efficacy of integrating chemical dehalogenation and bioremediation, a method for the destruction of PCBs in soil. monitored. Results indicated that KPEG was not appreciably of residual PCB congeners following treatment was monitored of the Salmonella/microsome assay and the E. coli prophage PCB degradation than their non-KPEG treated counterparts. No polyethylene glycol (KPEG) and bioremediation, to optimize receiving bacterial treatment alone did show decreases in Samples were taken at day 0, 90, and 180. Changes in the soils at day 0 and day 180. There was no decline in total solvent extractable organics in the sterile control soils or technologies, chemical dehalogenation using potassium the destruction and detoxification of PCB-contaminated soil. the KPEG treated boxes did show a slightly higher level of the KPEG treated soils over the study period. The soils the samples treated with KPEG than from the sterile control the study period. The genotoxicity of the soil for all This study proposed coupling two different treatment treatment conditions was unchanged over the study period. treatment conditions were examined in the study: (1) chemical treatments showing a decrease in extractable organics of 29% two tetrachlorobiphenyls, two pentachlorobiphenyls, and one using the Salmonella/microsome and E. coli prophage induction |
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| Item Description: | "Major subject: Geology". Vita. |
| Physical Description: | xi, 101 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |